Originally had a 2.7 Hayward vs. The basket would never fill up. No bubbles . I Also , Rheem heater , jandy salt cell. I replaced the pump with a jandy 2.7 vs Basket will not fill up and I get bubbles in returns . I have a spa intake , two masters( one valve, not sure how it’s piped )and a vacuum . Each with their own pentair 2 way. 4 valves on intake returns - 4 jets in pool ( on one valve) , 3 bubblers each on there own valve ,a fall, spa return , and 6 spa jets on one valve . No matter the configuration I get bubbles, but not always and never on the 6 spa jets ( it’s the closets to the pump ) I have automation on the spa intake and spa jets , added when I replaced the pump . Whether I’m pulling off the spa , skimmer or main , always low basket fill . I also get bubbles in the spa main return but cannot visualize the bubblers or fountain . Pretty sure o rings are good and lubed . Main pump connection lubed, inspected and tight . Getting steady water from bleeder on filter no air . My pb is going bust and useless . The guy that replaced the pump and installed automation seems at a loss , said it could be the piping is too small to the intakes. Pretty sure it’s 2.5 to 2 at the pump . Wouldn’t the basket still fill with all intakes open and limited return? What can I do to figure out why basket will not fill and how to track down the bubbles ? I will gladly pay someone , i just feel like many of these guys are not true masters of the trade. My understanding is , If I pull off of the main the skimmer is out of the equation and vise versa. It doesn’t make sense .